This is where the harmonic balancer comes in. The circular device, made of rubber and metal, is bolted at the front end of the crankshaft to help absorb vibrations. It's usually connected to the crank pulley, which drives accessories like the air conditioner.
Additional costs: Ground water wells can also be tested for radon, then, if needed, can get a water radon mitigation system installed. Installing a water radon mitigation system runs from $1,000-$4,500, and maintenance runs $0 to $150 annually.
Cost are dependent on your needs. Generally, radon testing for locations with 20 miles of our office will cost $165. Radon mitigation costs approximately $1,200 to $1,600. For more information on our fees, see our Pricing Estimates Page.